AlmaLinux generally has Java installed. You can check whether java is installed with this command:

which -a java

It should return:

/usr/bin/java

Then, you can check the Java version with this command:

java -version

For AlmaLinux 9, it should return:

openjdk version "11.0.17" 2022-10-18 LTS
OpenJDK Runtime Environment (Red_Hat-11.0.17.0.8-2.el9_0) (build 11.0.17+8-LTS)
OpenJDK 64-Bit Server VM (Red_Hat-11.0.17.0.8-2.el9_0) (build 11.0.17+8-LTS, mixed mode, sharing)

Next, you check whether javac is installed. You can use the which command to determine whether it is installed. Generally, its not installed and you use this command to

sudo dnf search jdk | egrep -- '-17'

It should return:

Last metadata expiration check: 0:11:17 ago on Mon 19 Dec 2022 11:32:48 PM EST.
java-17-openjdk.x86_64 : OpenJDK 17 Runtime Environment
java-17-openjdk-demo.x86_64 …

When using cloud native application architectures, Functions have an important role for the business logic without managing any infrastructure. Functions is a serverless platform powered by the Fn Project open source engine. These Functions are mostly used to create and run different tasks. They can be executed using Fn Project CLI, OCI CLI or a […]

There’s so much great content across the internet. I do my best to share the best I can find each week in the OpenLampTech newsletter. Enjoy this week’s original and curated content. Thank you.

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech newsletter.

This week in OpenLampTech issue #57, I’m sharing curated content on:

• A curated piece on JSON-Based SQL Injection
• WordPress backup file best practices
• Working with APIs in Laravel
• Using SQL Window functions for percentage calculations
• A new dev environment …

Operators hide the complexity of the application and Kubernetes. Instead of dealing with Pods, StatefulSets, tons of YAML manifests, and various configuration files, the user talks to Kubernetes API to provision a ready-to-use application. An Operator automatically provisions all the required resources and exposes the application. Though, there is always a risk that the user would want to do something manual that can negatively affect the application and the Operator logic.

In this blog post, we will explain how to limit access scope for the user to avoid manual changes for database clusters deployed with Percona Operators. To do so, we will rely on Kubernetes Role-based Access Control (RBAC).

The goal

We are going to have two roles: …

Hello MySQL enthusiasts!

We are excited to announce the schedule for the MySQL & Friends devroom at FOSDEM 2023. This year’s devroom will feature a diverse lineup of talks and presentations focused on MySQL.

The program is still in draft form as we await confirmation of accepted speakers.

We encourage you to mark your calendars and join us for what promises to be an engaging and informative event.

In addition, don’t miss the chance to extend your stay in Belgium and participate to the preFOSDEM MySQL Days that will take place on 2nd and 3rd February 2023. Registration here.

Sunday, Feb 5th

For this last technical post of the MySQL Community Advent Calendar 2022, I will explain how to grant privileges to users in MySQL 8.0. This is an important task for anyone who is responsible for managing a MySQL database, as it allows you to control which users have access to which parts of your database. […]

In this blog we will create MySQL backup and then restore single table from Percona Xtrabackup without doing full restore. This post is basically a work-log in response to a…

The post Restore single MySQL table (ibd) from Xtrabackup (video demo) first appeared on Change Is Inevitable.

Since MySQL 8.0.30, the Dynamic InnoDB Redo Log is a new feature that allows users to resize the redo log files on the fly without the need for a restart. This is a significant improvement over previous versions of MySQL, where the redo log files had to be manually resized and the database had to […]

Given the recent surge of interest in ChatGPT and the AI capabilities it offers, I decided to conduct an interview with it to assess its suitability for a MySQL Consultant…

The post MySQL Interview – ChatGPT is not your DBA first appeared on Change Is Inevitable.

In this blog, we will discuss what UUIDs are and how to use them in MySQL 8.0. We will also explore the advantages and disadvantages of using UUIDs and their different types.  Whether you are new to UUIDs or an experienced user, this blog will provide valuable insights and tips for using UUIDs in MySQL […]